21527380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8093}}^1$

素因数の和:8128

約数の個数: 48

約数和(自身を含む): 54391680

約数和(自身を除く): 32864300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8093, 16186, 32372, 40465, 56651, 80930, 113302, 153767, 161860, 226604, 283255, 307534, 566510, 615068, 768835, 1076369, 1133020, 1537670, 2152738, 3075340, 4305476, 5381845, 10763690, 21527380]

約数ペア:

[(1, 21527380), (2, 10763690), (4, 5381845), (5, 4305476), (7, 3075340), (10, 2152738), (14, 1537670), (19, 1133020), (20, 1076369), (28, 768835), (35, 615068), (38, 566510), (70, 307534), (76, 283255), (95, 226604), (133, 161860), (140, 153767), (190, 113302), (266, 80930), (380, 56651), (532, 40465), (665, 32372), (1330, 16186), (2660, 8093)]